Lucius j



r @New STATES' LU G1 U 'S' J; Kuo-wines," o n` 'warmem `Mass Ago H es ju'r'rs,l

narran/toAPPARATUS For OPERATING VALys craint-ENGINES.'

Specification forming part of Letters Patent No. 216,656, daed '0c`iohi:r 14,1562. i'

/fo (tZZ whom ,it 12mg/ concern,.-

'Be it known that I, Lucius J. hNowLEs,of Tarreo ofthe county of \Voreester, 1n the State Massachusetts, have invented a new anduse- Valves of Direct- ActionEngines; and 4I do hereby declare that the following is al full and exact description thereof, reference being had to the accompanying drawings, making-part of this' application. l

My invention relates to .certain improvements in the valve-motion (or apparatus for operating. the Valve) of a direct-action engine, and has for its object to insure the proper and requisite motions of the valve through off when the which` steam passes to and from the cylinder of the engine, and to render the engine capa'- ble of v automatically starting up with the piston at anypoint in its stroke.

Itis a fact known to thosewho are familiar with the operation of (double-acting),direct-` 4' action engines that if thefvalvcbe operated K iary engine vfor producing the desired operaf tion of the valves; and on the tth dayvof January, '1859, Lettcrs'Pz-,tcnt' of the United States weregranted to me, in which is shown` and described a new mode of accomplishing this-.desirable result by means of a plungerver piston Working in a cylinder formed in .the steam-chest,which plunger' is connectedV te the slide-'valige ofthe engine, and .worked through thejinedium of an'auxiliary'slidevalvc,jwhich latter isoperated by the pistonrod ofY the engine, in a manner shown and Ciescribed ,in said Letters Patent.

My preseht invention consists inV so con- V struetingthe plunger or piston (which moves and controls the engine-valve) and combining it with the engine as that it `operatesas its own valve in the admission'and exhaustion el' the steam whic'. lrivcs it, as hereinafter more V `1 `rlitrenaille tt e skilled in the art to make and' use iny inyention, I -willproceed doscribeits constructionand operation, referring by letters to the accompanying drimvingain 'whichfful Iinprov'exnei-it in the Method of Operating.

,Figure-1 is asectional'elevation of a doublef acting pumping-engine, v Fig. 2 is a similar View illustrating a different position of parts,

aud lligp embraces'detailbottom and end views of the Valve-'piston'.

The same parts are marked in lthe different Vfigures with the same letter of refe rence. A 1s the cylindexyl the piston, and the piston-rod', of the' engine.

"l-l) are the steam-passages or ports,and

E the exhaust-porl-.

y J1 is a box or cylinder" bolted to themain easlingof the engine, fitted with a Vpiston or plunger, I, and having formed in it the sten-nv chest (l, from which extendthe steanrporis 1 a (1,-, opening into'the interiorof cylinder (l. The portsb I) extend fron'rthe interior fof'eyt iiider Jto the inain-cxhaust pipe, and'thy, 'as well'as the pertsa a, communicate at the prop-` er period with .the openings g ll. 'i y" ll.' 'i' ol'pis` t0n vLiu a manner and for-pn rposes which will be' presently explained.

ll is the ordinary slidevalve, which is so connected to the piston l'. as to be moved tou gitudinallyby. it.

y K is a verticallysarranged arm, secured ai. lits lower end te the` pistou-rode, and provided atits opposite end with a head, through which j the rod c of the pistoni freely plays, and lon which are.l formed -inclined faces -/"j",'\\'hich operatenp'on the (faurfacesl 2) of the tappots ordogs d d', which are secured by sot-'screws c tothe rode.

The steam-chest G, it will he seen, is e.\-

'tended farther' down than usual atene en'd',for

the accommodation of the steam induction pipe F, which is connected to the main casiing ofthe cylinder, (same as exhausippm) ini stead of being coupled to the box .l or st`ea.mchcst,7 as heretofore.

The arrangement addformation of the op'eri` ings for inductng and eduoting steamjt'o and from 'either end ofthe piston l will beclearly seen by particular reference tothe detail views at'Fig. 3, 'Where it will be Observed'tha'tfsaijd. -openlngsg h'tf/ hi extend out through the ends of said piston.'

Having so far alluded t0 the Several parts only as'regards their construction and arrange ment," i win now explain their operation and advantages. I will suppose steam tobe turned Stom-With the-several parts in the position shown fgjn'Ei 1j, The piston-B will thenbe driven `in sanos -in' space p is exhausted through passages-7K1)` v Y tothe main exhaust- E,-and atthe same time {th'e opening'h (seen at Fig. 1) comes overfop'- A posit-e to the steam-port a, and steaingpassing through the end of piston I into space o vdrives said .piston longitudinally, as indicated bythe :Thine-arrow, to shift the slidefvalve H, forthe 'admission of steam to the other end' ofthe cylinder! for divingtlie piston Bin the oppof site direetiornin the usual manner.` As-thepiston Btr'avelsback, thelinelinedffaces f f 'operate on .the legs' or. cam-'faces 1 2 of the dog d,'and 'tnrn the-piston I' back into the irstdescribed position on its axis, as s een in'Fig..

cxhanspqrtby-gg sito 'exhaust the space o, and thebpe-niiig kisorought over the steamport a, 'solas to admit steam to the spacep and drive Vthe piston I longitudinallyinto the position shownat'Fig. 1,'Whenl the valve H will have beenagain shil'ted, and so on.v It will beobserved thatthe ports or openings h andh' are ont obliqnelyto. the axis oi' the piston I where ,gthey come through its periphery. The object of thus shaping the Asaid openings is to have A their capacity constantly increase as the pis-- t'on I slides .over 'the ports a "a, to insure the p'ropiilsion of the piston against anymesist 'anceY that might 'occur during its rnotion. I have `described ytheinelined faces (which are earriedf'by the pieten-rod) as coming'npfagainst .and rotating the' dogs d d before' the piston B hasnishedits'stroke; bntit will be underi stood -that-atihe instant the/ said dogs are -tnlrned the -pistf'in I takes steam, and, movi-ng ahead in the-sani lf'Bhas inished'its stroke.

-.Therobject of the, openingsfg'z' and g' fis to admit" and exhau'ststeam to and. from either` endofthe pistonIat proper ti ines to prevent 11j. the expansion oi' the steam by which itis dritt#v e direction as piston Bfhas .1',enersaeQtlieiitalre., 1b4rig-thaitiine sadsnistnne ien, and to also avoidjauy liammering'ofi-the piston against the ends of cylinder Jg' and the operations. of'this feature of the a may be thus .briefly explained; Suppose .the piston to be just arriving at the position seen in space p will tend to keep vthe piston `I in motion; but-directly the Asaidpistoncontinues its motion the openingz -comes opposite to the dition of the apparatus, it will open the stean'r vbetween thesetwo vlimits thepiston I'isbalf- Since thisfeature of thejapparatu's is made the Theobject .and-advantage .'ofwputtingthe steam-induction F down inthe maincasting of the eylinderA, as before described, islthatits attachments may .be removed without tical benefit of snchan arrangementwillibe apparent tothe engineer'. i- Itwill be understood ihat'previous tomy present invention the piston which moved theg' valve H had the admission v and:exhaustion of the i steam operating it '.effeotedpLa yalgg factnatedmiai'egn'fthe iinproved apparatus hereinideseribed itw'illhbc 'seen that thepiston I ismade to act as its own valve, as khereinbefore explained.

lighten it, leavingsnfcientstock to form the portsg-high-z'.

operation of my improved' apparatus for op erating the valves of engines, andynot Wishingto limit myself.- tothe precise construction'` secure by Letters Patent, isj' f a, piston, I, or 'its equivalent, which is first brought into a proper positiontotake steam, substantially as described, by a partial rotary i motion' derived from the eng'ne5and whichis" then driven 4by the steam independentlyof the engine, substantially in the manner d'escribed. f I

rwports bls-in eombinatienfwitn the-:pistonf and the steam-passagesA of its cylindensubfstantially as andl for the purpose set. forth. l

'at Fig. 1i" -lts inertia and expansioi'f steam steam-port a, admitting' steam to the space o, and then the-opening t comes over exhau'stl port b, exhausting'steam from the space p.v s As soon as the piston I recedesrfrom this conl yandexhaust ports whichfbrought-it.1ipand i anced or held. This operation'is repeatedat the other end of the stroke ofthe piston. l

subject of ALetters Patent previously 'granted 'i tome, I will not more fully allude toit here.v

breaking the -vs tean1lconnections. The pr-ae .I propose to make the lpiston I hollow, to

.Having fully described the constrncjtion shown, whatI claim as new, and desire to l. Operating the'slide-valveH 'by mean-slof` 

